Anderson, who has 590 Test victims to his name, has endured a frustrating summer with just six wickets in his last three matches and had to recently quash speculation his 17-year career was drawing to a close.

Root said the 38-year-old would get an immediate chance to put things right at the Ageas Bowl in Southampton, as the hosts look to go 2-0 up in the series on Thursday.

"To question Jimmy's ability, his record... do that at your own peril," Root said.

"There's a reason he's got so many wickets over such a long period - he's a consistent performer. I don't think it'll be long until he's back among the wickets big time.

"It'll be very silly for us to write someone like Jimmy off. He's still as dedicated as ever, working hard at his game and looking good in practice."

Root said Anderson had spoken to him about his form during the first Test.

"We had an honest conversation... to get that off his chest and to talk about it has helped him," Root added.

"It shows even the greats of the game still have those days when it doesn't always come as naturally to you... it can be a real struggle sometimes.

"It's easy to look at the statistics and not have a more broad view on how things are actually going."

England earlier named uncapped seam bowler Ollie Robinson in their 14-man squad to replace all-rounder Ben Stokes, who has been ruled out of the remaining two games of the three-match series for family reasons.

Australian Associated Press